Message-ID: <200505081744.28092.jwd@surewest.net>
Date: 2005-05-09T00:44:27Z
From: John
Subject: z limits
In-Reply-To: <p06110400bea4516325c8@[136.152.194.130]>
On Sunday 08 May 2005 16:32, Jennifer Skene wrote:
> Hello,
>
> I am using R to run a program called GRASP - Generalized Regression
> Analysis and Spatial Prediction.
>
> I am trying to draw a figure using GRASP, and I get the following
> error message in R:
>
> Error in image.default(map, col = heat.colors(12)) :
> invalid z limits
>
> What are z limits? Can I manually set them?
>
> Please let me know if you have any insight on this!
>
> Thanks,
> Jennifer Skene
I believe that the "z" limits in GRASP relate to the third dimensional
variable. If you are using spatial data that uses either altitude or another
variable that gives a pseudo-surface, you should probably check the
variable's range.
JWD